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PMP23389

Space-grade 12V to 5V 15A synchronous buck converter reference design

PMP23389

Design files

Overview

This reference design uses the TPS7H5002-SP PWM controller to control a synchronous buck for a nominal 12V input to a fixed output at 5.1V with up to a 15A load. The TPS7H6023-SP drives GaN FETs for a reliable design in space-based applications. The output current is directly sensed for telemetry and over-current protection. This design switches at 750kHz and achieves over 92% efficiency with an output ripple below 30mV.

Features
  • Nominal 12V DC input for space-based applications
  • Up to 92% efficiency at 5.1V, 15A
  • Packaged GaN assembly
  • 750kHz for optimized switching and thermal performance
Output voltage options PMP23389.1
Vin (Min) (V) 10
Vin (Max) (V) 14
Vout (Nom) (V) 5.1
Iout (Max) (A) 15
Output Power (W) 76.5
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

PDF | HTML
TIDT394.PDF (1229 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDMCW1.PDF (314 K)

Detailed schematic diagram for design layout and components

TIDMCW2.PDF (128 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDMCW3.PDF (251 K)

Detailed overview of design layout for component placement

TIDMCW5.ZIP (1362 K)

Files used for 3D models or 2D drawings of IC components

TIDCGO8.ZIP (619 K)

Design file that contains information on physical board layer of design PCB

TIDMCW4.PDF (1097 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

TPS7H5002-SPRadiation-hardened QMLV, 2-MHz PWM controller with synchronous rectification and dead-time setting

Data sheet: PDF | HTML
General-purpose op amps

LM158QMLMilitary-grade, dual, 32-V, 700-kHz operational amplifier

Data sheet: PDF
Half-bridge drivers

TPS7H6023-SPRadiation-hardened, QMLV 22V half-bridge GaN gate driver

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP23389 Test Report PDF | HTML May 03, 2024

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